For almost a decade, ACQ treated timber products have been used in some of the world’s most beautiful locations , like the pristine environments of national parks in Australia , North America, Europe and Japan to neighborhood playgrounds and backyards. ACQ stands for Alkaline Copper & Quaternary. This system of timber impregnation is based on the well established effectiveness of copper combined with an organic quaternary compound. Copper and quaternary compounds are effective fungicides and termicides. Together they provide protection against a broad spectrum of decay fungi, borer and termite attack.
All ACQ treated timber supplied by Davids Timber is treated to Australian Standards, AS1604 and readily available in hazard levels, H3 and H4.
ACQ treated timber will initially have a greenish appearance and will eventually weather to a honey brown colour before fading to a driftwood grey after exposure to the elements. Timber treated with ACQ can be painted or stained to match most outdoor colour schemes.
When using ACQ treated timber, we recommend the use of fasteners and other hardware which are in compliance with building codes for the intended use. The fasteners we recommend are quality hot dipped and stainless steel fasteners. Direct contact of ACQ with treated timber with aluminum is not recommended.
ACQ is commonly used for
- Boardwalks
- Decking
- External Staircases
- Fencing
- Jetties
- Landscaping
- Parks & Gardens
- Pergolas
- Playgrounds
- Retaining Walls
- Schools & Government Projects
- Sound Barriers
- Streetscapes & more
ACQ Features
- Provides long-term protection from rot, fungal decay and insect attack
- Initially weathers to a warm honey brown colour
- Easily painted or stained
- Quality control ensured by industry recognised quality assurance systems
- Approved for use up to and including H5
- Wood scraps can be disposed of in ordinary rubbish collection
Treatment Levels Available
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H3 |
H4 |
H5 |
H6 |
ACQ |
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